The thing is that with the new micro display tv's because the picture size is much larger than what you are normally used to seeing it not the tv fault.

The old ntsc signal has only so much resolution/pixels. You blow that you with a much larger tv than a 32" etc and you see the weakness.

Normally the Rg6 because it is shielded you should hardly ever get any interference. On the larger older C band satellite that we used to install power wires are run right beside the rg6 to move the arm and feed and there is no interference.
Once you get hdtv your tv will shine. :)